** for vSphere 5.0 check this update! ** Today I received a very valid question around a full cluster failure. What happens when all the hosts in a cluster go down and at some point return? Will the VMs be restarted and what do I need to have in place to ensure they will? It seems to be an urban [...]

Over the last couple of months Frank Denneman and I have been working really hard on a secret project. Although we have spoken about it a couple of times on twitter the topic was never revealed. Months ago I was thinking about what a good topic would be for my next book. As I already wrote a lot of articles [...]

I was reading through some documentation and found a piece on creating a cold Standby vCenter server. This used to be a common practice with vCenter 2.5 and it worked well as vCenter itself was more or less stateless. With vSphere 4.0 something changed. Although at first it might not seem substantial it actually is. As of vSphere 4.0 VMware [...]

A week ago I already touched on this topic but I wanted to get a better understand for myself what could go wrong in these situations and how vSphere 4.1 solves this issue. Pre-vSphere 4.1 an issue could arise when shares had been set custom on a virtual machine. When HA fails over a virtual machine it will power-on the [...]

I received this Paper a while back and think it is an excellent read. I just copied a random part of the paper to give you an idea of what it covers. There’s not much more to say about it then just read it, it is as in-depth as it can get on FT. I read it several times by [...]

Early 2009 I wrote an article on the impact of Primary Nodes and Secondary Nodes on your design. This was primarily focussed on Blade environments and basically it discussed how to avoid having all your primary nodes in a single chassis. If that single chassis would fail, no VMs would be restarted as one of the primary nodes is the [...]

I was discussing something with one of my former colleagues a couple of days ago. He asked me what the impact was of running VMware View in an environment without HA. To be honest I am not a View SME, but I do know a thing or two about HA/vSphere in general. So the first thing that I mentioned was [...]